/*
 
(c) 2008 by Sławek Kruczek
slav.mir@gmail.com
 

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

*/


package analytics.util;


public class RPNMeta implements RPNElement {
    
    public enum Type {
        L_PAREN,
        R_PAREN,
        ARG_SEP,
    }
    
    private final Type type;
    
    public static RPNMeta parseMeta(String name) {
        switch(name.charAt(0)) {
            case '(': return new RPNMeta(Type.L_PAREN);
            case ')': return new RPNMeta(Type.R_PAREN);
            case ',': return new RPNMeta(Type.ARG_SEP);
            
            default: return null;
        }
    }
    
    
    public RPNMeta(Type type) {
        this.type = type;
    }
    
    public Type getType() {
        return type;
    }


    public void exec(RPNExecutionEnvironment env) {
        throw new UnsupportedOperationException("Unsupported operation.");
    }

}
